Submission #999024

#	Time	Username	Problem	Language	Result	Execution time	Memory
999024		crafticat	Diversity (CEOI21_diversity)	C++17	0 / 100	0 ms	404 KiB

diversity

#include <bits/stdc++.h>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);

    int n, q; cin >> n >> q;
    vector<int> arr(n);
    for (int i = 0; i < n; ++i) {
        cin >> arr[i];
    }
    for (int i = 0; i < q; ++i) {
        int l, r; cin >> l >> r;
        l--;
        vector<int> v;
        v.reserve(r - l);
        int s = r - l;
        for (int j = l; j < r; ++j) {
            v.push_back(arr[j]);
        }

        std::sort(v.begin(), v.end());
        int ans = 0;
        for (int j = 0; j < s; ++j) {
            set<int> num;
            for (int k = j; k < s; ++k) {
                num.insert(v[k]);
                ans += num.size();
            }
        }
        cout << ans << "\n";
    }

    return 0;
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 10
• Subtask 3: 0 / 8
• Subtask 4: 0 / 16
• Subtask 5: 0 / 26
• Subtask 6: 0 / 36